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Preparation and Characterization of Bio-nanocomposite Films Based on Soy Protein Isolate and Montmorillonite Using Melt Extrusion by P. Kumar; K.P. Sandeep; S. Alavi; V.D. Truong; R.E. Gorga is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Preparation and Characterization of Bio-nanocomposite Films Based on Soy Protein Isolate and Montmorillonite Using Melt Extrusion about?

The non-biodegradable and non-renewable nature of plastic packaging has led to a renewed interest in packaging materials based on bio-nanocomposites (biopolymer matrix reinforced with nanoparticles such as layered silicates). Bio-nanocomposite films based on soy protein isolate (SPI) and montmorillonite (MMT) were prepared using melt extrusion. Effects of the pH of film forming solution, MMT content, and extrusion processing parameters (screw speed and barrel temperature distribution) on the structure and properties of SPI-MMT bio-nanocomposite films were investigated. X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) were used for structural characterization of the films. Properties of the films were determined by tensile testing, dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and water vapor barrier measurement. The arrangement of MMT in the soy protein matrix ranged from exfoliated at lower MMT content (5%) to intercalated at higher MMT content (15%). There was a significant improvement in mechanical (tensile strength and percent elongation at break) and dynamic mechanical properties (glass transition te

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Author

P. Kumar; K.P. Sandeep; S. Alavi; V.D. Truong; R.E. Gorga

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0260-8774)

Published

2010

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)